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https://www.readbyqxmd.com/read/28718957/elevated-levels-of-il-22-and-il-17a-producing-t-helper-cells-in-cholangiocarcinomarelated-to-liver-fluke-infection
#1
Si-Biao Su, Jian-Feng Zhang, Fei-Fei Huang, Yu Cen, Hai-Xing Jiang
Cholangiocarcinoma (CCA) associated with liver fluke infection appears to involve inflammatory and immune processes, but whether these involve the proinflammatory cytokine interleukin-17A (IL-17A) and proliferative cytokine interleukin-22 (IL-22) is unclear.We compared levels of IL-22- or IL-17A-producing T helper cells and cytokine levels in 30 CCA patients with long-term liver fluke infection, 40 patients with liver-fluke infection but not CCA and 16 healthy controls. Analyses were performed using immunohistochemistry, flow cytometry, ELISA and RT-PCR...
July 18, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28715437/high-systemic-il-6-is-associated-with-worse-prognosis-in-patients-with-non-small-cell-lung-cancer
#2
Estela Maria Silva, Vânia Sammartino Mariano, Paula Roberta Aguiar Pastrez, Miguel Cordoba Pinto, António Gil Castro, Kari Juhani Syrjanen, Adhemar Longatto-Filho
Characteristic cytokine patterns have been described in different cancer patients and they are related to their diagnosis, prognosis, prediction of treatment responses and survival. A panel of cytokines was evaluated in the plasma of non-small cell lung cancer (NSCLC) patients and healthy controls to investigate their profile and relationship with clinical characteristics and overall survival. The case-controlled cross-sectional study design recruited 77 patients with confirmed diagnosis of NSCLC (cases) and 91 healthy subjects (controls) aimed to examine peripheral pro-inflammatory and anti-inflammatory cytokines (IL-2, IL-4, IL-6, IL-10, IL-17A, TNF and IFN-γ) by Cytometry Beads Arrays (CBA Flex) in...
2017: PloS One
https://www.readbyqxmd.com/read/28714519/circulating-regulatory-t-cell-subsets-predict-overall-survival-of-patients-with-unresectable-pancreatic-cancer
#3
Chen Liu, He Cheng, Guopei Luo, Yu Lu, Kaizhou Jin, Meng Guo, Quanxing Ni, Xianjun Yu
Most patients with pancreatic ductal adenocarcinoma (PDAC) have unresectable cancers with a dismal prognosis, in which cohort chemotherapy is the primary treatment. T cell immune adaption is critical for tumor immune escape and prognosis of this disease. The present study aimed to determine the correlation between peripheral T cell subset distribution in patients with unresectable PDAC and their response to chemotherapy. Two hundred and twelve patients with unresectable PDAC were included whose blood samples were collected for analysis of T cell subsets, including CD3+, CD4+, CD8+, CD8+CD28+ and CD4+CD25+CD127 T cells by flow cytometry before and after gemcitabine-based chemotherapy...
August 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28713557/yin-and-yang-of-interleukin-17-in-host-immunity-to-infection
#4
REVIEW
Shibali Das, Shabaana Khader
The interleukin-17 (IL-17) family cytokines, such as IL-17A and IL-17F, play important protective roles in host immune response to a variety of infections such as bacterial, fungal, parasitic, and viral. The IL-17R signaling and downstream pathways mediate induction of proinflammatory molecules which participate in control of these pathogens. However, the production of IL-17 can also mediate pathology and inflammation associated with infections. In this review, we will discuss the yin-and-yang roles of IL-17 in host immunity to pathogens...
2017: F1000Research
https://www.readbyqxmd.com/read/28713377/th1-and-th17-cells-and-associated-cytokines-discriminate-among-clinically-isolated-syndrome-and-multiple-sclerosis-phenotypes
#5
Gabriel Arellano, Eric Acuña, Lilian I Reyes, Payton A Ottum, Patrizia De Sarno, Luis Villarroel, Ethel Ciampi, Reinaldo Uribe-San Martín, Claudia Cárcamo, Rodrigo Naves
Multiple sclerosis (MS) is a chronic, inflammatory, and demyelinating disease of the central nervous system. It is a heterogeneous pathology that can follow different clinical courses, and the mechanisms that underlie the progression of the immune response across MS subtypes remain incompletely understood. Here, we aimed to determine differences in the immunological status among different MS clinical subtypes. Blood samples from untreated patients diagnosed with clinically isolated syndrome (CIS) (n = 21), different clinical forms of MS (n = 62) [relapsing-remitting (RRMS), secondary progressive, and primary progressive], and healthy controls (HCs) (n = 17) were tested for plasma levels of interferon (IFN)-γ, IL-10, TGF-β, IL-17A, and IL-17F by immunoanalysis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28710773/reciprocal-modulation-of-helper-th1-and-th17-cells-by-the-%C3%AE-2-adrenergic-receptor-agonist-drug-terbutaline
#6
Catalina M Carvajal Gonczi, Mahdieh Tabatabaei Shafiei, Ashley East, Erika Martire, Meagane H I Maurice-Ventouris, Peter J Darlington
Catecholamine hormones are powerful regulators of the immune system produced by the sympathetic nervous system. They regulate the adaptive immune system by altering T cell differentiation into T helper (Th) 1 and Th2 cell subsets, but the effect on Th17 cells is not known. Th17 cells, defined in part by chemokine receptor CCR6 and cytokine IL-17A, are crucial for mediating certain pathogen-specific responses, and are linked with several autoimmune diseases. We demonstrated that a proportion of human Th17 cells express β2-adrenergic receptor, a G protein coupled receptor that responds to catecholamines...
July 15, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28709893/regulatory-effect-of-baicalin-on-the-imbalance-of-th17-treg-responses-in-mice-with-allergic-asthma
#7
Lu Xu, Jinxia Li, Yu Zhang, Peng Zhao, Xuemei Zhang
ETHNOPHARMACOLOGY RELEVANCE: Baicalin, a flavonoid compound, was isolated from traditional Chinese medicine Scutellaria baicalensis Georgi. The study aimed to explore the regulatory effect of baicalin on immunological balance of Th17/Treg responses and the possible mechanisms in mice with allergic asthma. MATERIALS AND METHODS: Mice were sensitized and challenged with OVA+LPS by intranasal instillation, and were intragastrically treated with baicalin from days 22-36 after sensitization...
July 12, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28708859/interleukin-17a-induced-production-of-acute-serum-amyloid-a-by-keratinocytes-contributes-to-psoriasis-pathogenesis
#8
Elodie Couderc, Franck Morel, Pierre Levillain, Amandine Buffière-Morgado, Magalie Camus, Camille Paquier, Charles Bodet, Jean-François Jégou, Mathilde Pohin, Laure Favot, Martine Garcia, Vincent Huguier, Jiad Mcheik, Corinne Lacombe, Hans Yssel, Gérard Guillet, François-Xavier Bernard, Jean-Claude Lecron
BACKGROUND: Acute-serum Amyloid A (A-SAA), one of the major acute-phase proteins, is mainly produced in the liver but extra-hepatic synthesis involving the skin has been reported. Its expression is regulated by the transcription factors NF-κB, C/EBPβ, STAT3 activated by proinflammatory cytokines. OBJECTIVES: We investigated A-SAA synthesis by resting and cytokine-activated Normal Human Epidermal Keratinocytes (NHEK), and their inflammatory response to A-SAA stimulation...
2017: PloS One
https://www.readbyqxmd.com/read/28708082/pathogenic-role-of-il-17-producing-immune-cells-in-obesity-and-related-inflammatory-diseases
#9
REVIEW
Marwa Chehimi, Hubert Vidal, Assia Eljaafari
Obesity is associated with low-grade chronic inflammation. Indeed, adipose tissues (AT) in obese individuals are the former site of progressive infiltration by pro-inflammatory immune cells, which together with increased inflammatory adipokine secretion induce adipocyte insulin resistance. IL-17-producing T (Th17) cells are part of obese AT infiltrating cells, and are likely to be promoted by adipose tissue-derived mesenchymal stem cells, as previously reported by our team. Whereas Th17 cell are physiologically implicated in the neutralization of fungal and bacterial pathogens through activation of neutrophils, they may also play a pivotal role in the onset and/or progression of chronic inflammatory diseases, or cancer, in which obesity is recognized as a risk factor...
July 14, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28706956/ethyl-caffeate-ameliorates-collagen-induced-arthritis-by-suppressing-th1-immune-response
#10
Shikui Xu, Aixue Zuo, Zengjun Guo, Chunping Wan
The present study was designed to assess the antiarthritic potential of ECF in collagen-induced arthritis (CIA) and explore its underlying mechanism. Methods. In vitro, lymphocyte proliferation assay was measured by CCK-8 kit. In vivo, the therapeutic potential of ECF on CIA was investigated; surface marker, Treg cell, and intracellular cytokines (IL-17A and IFN-γ) were detected by flow cytometry. Th1 cell differentiation assay was performed, and mRNA expression in interferon-γ-related signaling was examined by q-PCR analysis...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28706520/hypothermia-promotes-interleukin-22-expression-and-fine-tunes-its-biological-activity
#11
Evgeny Chichelnitskiy, Britta Himmelseher, Malte Bachmann, Josef Pfeilschifter, Heiko Mühl
Disturbed homeostasis as a result of tissue stress can provoke leukocyte responses enabling recovery. Since mild hypothermia displays specific clinically relevant tissue-protective properties and interleukin (IL)-22 promotes healing at host/environment interfaces, effects of lowered ambient temperature on IL-22 were studied. We demonstrate that a 5-h exposure of endotoxemic mice to 4°C reduces body temperature by 5.0° and enhances splenic and colonic il22 gene expression. In contrast, tumor necrosis factor-α and IL-17A were not increased...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28706144/prognostic-role-of-intratumoral-il-17a-expression-by-immunohistochemistry-in-solid-tumors-a-meta-analysis
#12
Shimin Wang, Zhi'an Li, Guoming Hu
IL-17A is an important proinflammatory cytokine which is frequently elevated in tumor microenvironment. However, the role of intratumoral IL-17A in solid tumors remains controversial. Herein, we conducted a meta-analysis to assess the prognostic impact of intratumoral IL-17A in patients with solid tumor. PubMed and EBSCO were searched to identify the studies evaluating the associations between intratumoral IL-17A measured by immunohistochemistry (IHC) and overall survival (OS) and disease-free survival (DFS) in solid tumors...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28705781/effects-of-interleukin-17-on-the-cardiovascular-system
#13
REVIEW
Marie Robert, Pierre Miossec
Cardiovascular diseases remain the leading cause of death worldwide and account for most of the premature mortality observed in chronic inflammatory diseases. Common mechanisms underlie these two types of disorders, where the contribution of Interleukin (IL)-17A, the founding member of the IL-17 family, is highly suspected. While the local effects of IL-17A in inflammatory disorders have been well described, those on the cardiovascular system remain less studied. This review focuses on the effects of IL-17 on the cardiovascular system both on isolated cells and in vivo...
July 10, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28704706/il-17b-a-new-area-of-study-in-the-il-17-family
#14
REVIEW
Qingli Bie, Chengqiang Jin, Bin Zhang, Haixin Dong
The interleukin (IL)-17 superfamily, a relatively new family of cytokines, consists of six ligands (from IL-17A to IL-17F), which bind to five receptor subtypes (from IL-17RA to IL-17RE) and induce downstream signaling. IL-17A, a prototype member of this family, has been reported to be involved in the pathogenesis of allergies, autoimmune diseases, allograft transplantations, and malignancies. Unlike IL-17A, which is mainly produced by T helper 17 cells, IL-17B is widely expressed in various tissues. Recently, the biological function of IL-17B in diseases, particularly tumors, has attracted the attention of researchers...
July 10, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28700632/inflammation-dependent-mtorc1-signaling-interferes-with-the-switch-from-keratinocyte-proliferation-to-differentiation
#15
Claudia Buerger, Nitesh Shirsath, Victoria Lang, Alina Berard, Sandra Diehl, Roland Kaufmann, Wolf-Henning Boehncke, Peter Wolf
Psoriasis is a frequent and often severe inflammatory skin disease, characterized by altered epidermal homeostasis. Since we found previously that Akt/mTOR signaling is hyperactivated in psoriatic skin, we aimed at elucidating the role of aberrant mTORC1 signaling in this disease. We found that under healthy conditions mTOR signaling was shut off when keratinocytes switch from proliferation to terminal differentiation. Inflammatory cytokines (IL-1β, IL-17A, TNF-α) induced aberrant mTOR activity which led to enhanced proliferation and reduced expression of differentiation markers...
2017: PloS One
https://www.readbyqxmd.com/read/28699932/broadalumab-siliq-another-il-17a-antagonist-for-psoriasis
#16
(no author information available yet)
No abstract text is available yet for this article.
July 17, 2017: Medical Letter on Drugs and Therapeutics
https://www.readbyqxmd.com/read/28698048/identification-and-functional-evaluation-of-two-stat3-variants-in-grass-carp-implication-for-the-existence-of-specific-alternative-splicing-of-stat3-gene-in-teleost
#17
Linyong Du, Hong Zhou, Lei Qin, He Wei, Anying Zhang, Kun Yang, Xinyan Wang
A STAT family member, STAT3, becomes activated as a DNA binding protein in response to cytokines and growth factors. In teleost, STAT3 cDNA has been cloned and identified in a few species, but only a single STAT3 transcript is revealed in these studies. In the present study, two variants of STAT3 gene generated by alternative splicing were isolated from grass carp and nominated as STAT3α1 and STAT3α2 based on the homology with their mammalian orthologs. In particular, the homologs of STAT3α1/2 were also found in various fish species, including zebrafish, takifugu, tilapia, medaka and goldfish...
July 8, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28695989/efficacy-and-safety-of-secukinumab-in-treating-moderate-to-severe-plaque-psoriasis-in-two-real-world-canadian-dermatology-clinics-a-multicenter-retrospective-study
#18
J R Georgakopoulos, A Ighani, L L Zhou, J Yeung
Secukinumab is an interleukin (IL)-17A antagonist approved in 2015 by health agencies around the world for the treatment of moderate to severe plaque psoriasis in adult patients. Current knowledge of the efficacy and safety of secukinumab is limited to data from phase III randomized controlled trials (RCT). Despite the acceptable safety profile and promising efficacy results, there remains to be a lack of understanding of treatment outcomes in real-world clinical practice. This article is protected by copyright...
July 11, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28694696/th17-profile-in-copd-exacerbations
#19
REVIEW
Marco Antonio Ponce-Gallegos, Alejandra Ramírez-Venegas, Ramcés Falfán-Valencia
COPD is characterized by an ongoing inflammatory process of the airways that leads to obstruction or limitation of airflow. It is mainly associated with exposure to cigarette smoke. In addition, it is considered, at present, a serious public health problem, ranking fourth in mortality worldwide. Many cells participate in the pathophysiology of COPD, the most important are neutrophils, macrophages and CD4+ and CD8+ T cells. Neutrophil migration to the inflammation area could be mediated largely by cytokines related to CD4+ Th17 lymphocytes, because it has been shown that IL-17A, IL-17F and IL-22 act as inducers for CXCL8, CXCL1, CXCL5, G-CSF, and GM-CSF secretion by epithelial cells of the airways...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28694068/jkb-122-is-effective-alone-or-in-combination-with-prednisolone-in-con-a-induced-hepatitis
#20
Mei-Chi Hsu, Sheng-Hung Liu, Chiung-Wen Wang, Nai-Yun Hu, Edwin S C Wu, Ying-Chu Shih, Peter J S Chiu
Con A-induced hepatitis in mice is an established model of autoimmune hepatitis (AIH). JKB-122, a toll-like receptor 4 (TLR4) antagonist, was tested for hepatotprotectant activity. Within several hours of Con A challenge (15mg/kg iv), increased production of proinflammatory cytokines with inflammatory infiltrate occurred in the liver. The severity of tissue necrosis and the amount of circulating liver enzymes peak at 24h post Con A challenge. JKB-122 was given 24 and 16h before, then concurrently, and 4 and 8h (× 5 doses) after challenge with Con A...
July 8, 2017: European Journal of Pharmacology
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